Did the alternative mail program "Boxer per" tried under the Offer at Amazon because on my Sony Tablet Z the integrated e-mail client is very sluggish. The quite annoying and Sony gets it just is not in the grip. So I had a look around for alternatives. This client works on my Tablet even faster than the previously favored by me "MailDroid". So far everything is working as it should. Not excitingly different, but everything happens very quick, so as it should be!